In this post a PrimeNumbers Func/delegate is evaluated in PLINQ (Parallel LINQ). It helps us to measure the performance gains when the same calculation is done in parallel ( #2 cores ) instead of in a sequential fashion ( #1 core ). Today I updated the post to show the performance difference when the same processing is done using a #4 cores ( #8 threads ) processor. We as software developers have many reasons to celebrate! Read on...